A decidedly square girl, lacking in neck area, with a broad torso and disproportionate legs. This girl appears to be wearing shoulderpads bearing a strong resemblance to Mike Singletary. Hence the term "LINEBACKER"

"did you see that pig steve brought home last night? She was a total linebacker."

A humorous sexual position in which reference to a Linebacker is used.

In order to give a LineBacker You have to have sex with a girl from behind. You stick two of your fingers into her ass and wipe them under her eyes just like a professional football player wears eye black. In order to complete the "LineBacker" when she gets up and runs away in disgust you have to point at her and shout "Run! Run!" then tackle her from behind.

It is acceptable to celebrate the completion of the "Linebacker" by screaming "Whooooo" or "This is my House" followed by chest bumping the wall.

when you're getting your girl from behind you ram two fingers up her poop chute, smear them under her eyes so she looks like a football player, then you tackle her as quickly as you can before she runs away.

I gave my girl a linebacker when she told me she didn't like the Chicago Bears.